EP2543966B1 - Système de navigation, procédé de navigation et support de données lisible par ordinateur. - Google Patents

Système de navigation, procédé de navigation et support de données lisible par ordinateur. Download PDF

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Publication number
EP2543966B1
EP2543966B1 EP12173213.5A EP12173213A EP2543966B1 EP 2543966 B1 EP2543966 B1 EP 2543966B1 EP 12173213 A EP12173213 A EP 12173213A EP 2543966 B1 EP2543966 B1 EP 2543966B1
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EP
European Patent Office
Prior art keywords
evaluation
unit
interval
driver
distance
Prior art date
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Active
Application number
EP12173213.5A
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German (de)
English (en)
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EP2543966A3 (fr
EP2543966A2 (fr
Inventor
Naoki Miura
Junichi Nonomura
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Aisin AW Co Ltd
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Aisin AW Co Ltd
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Publication date
Priority claimed from JP2011148878A external-priority patent/JP5724689B2/ja
Priority claimed from JP2011171682A external-priority patent/JP5803400B2/ja
Priority claimed from JP2011171681A external-priority patent/JP5782907B2/ja
Priority claimed from JP2011213307A external-priority patent/JP5810801B2/ja
Priority claimed from JP2011241506A external-priority patent/JP5760959B2/ja
Application filed by Aisin AW Co Ltd filed Critical Aisin AW Co Ltd
Publication of EP2543966A2 publication Critical patent/EP2543966A2/fr
Publication of EP2543966A3 publication Critical patent/EP2543966A3/fr
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Publication of EP2543966B1 publication Critical patent/EP2543966B1/fr
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3697—Output of additional, non-guidance related information, e.g. low fuel level
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
    • B60R16/0236—Circuits relating to the driving or the functioning of the vehicle for economical driving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
    • G01C21/3469—Fuel consumption; Energy use; Emission aspects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
    • G01C21/34—Route searching; Route guidance
    • G01C21/36—Input/output arrangements for on-board computers
    • G01C21/3605—Destination input or retrieval
    • G01C21/3617—Destination input or retrieval using user history, behaviour, conditions or preferences, e.g. predicted or inferred from previous use or current movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/84—Data processing systems or methods, management, administration

Definitions

  • the present invention relates to a navigation system, a navigation method, and a computer-readable storage medium.
  • a navigation system is used to guide a vehicle along a travel route.
  • Today there is an increasing need for fuel-saving driving from the viewpoint of fuel-cost saving and environmental protection and, to satisfy this need, a navigation system is proposed that provides guidance with the aim of fuel-cost reduction in vehicle driving.
  • a portable device and vehicle system is proposed (for example, see Japanese Patent Application Publication No. 2010-182108 ( JP-A-2010-182108 )).
  • This system serially acquires the vehicle driving status information and the eco-indicator on/off status information during the driving status and stores the acquired information in a storage unit.
  • the system displays the time-series change in driving statuses and the eco-indicator on/off states during the driving statuses, based on the information stored in the storage unit, that is, the information on multiple driving statuses and the information on multiple eco-indicator on/off statuses during the driving statuses.
  • EP 2 295 934 A1 discloses a navigation device displaying operation information corresponding to specified sequences of travel.
  • DE 10 2007 007 955 A1 discloses a vehicle comprising a navigation system displaying energy consumption on a map.
  • DE 10 2008 041 255 A1 discloses a method for displaying information about a current driving manner.
  • DE 10 2006 054 326 A1 discloses a method for displaying route information on a map.
  • the conventional system described above displays only the time-series change in the eco-indicator on/off status. Therefore, when the time-series change in the eco-indicator on/off status is indicated by displaying marks, each indicating the eco indicator on/off status, on the map, the smaller the scale is, that is, the wider the display range of the map is, the smaller the interval between the marks becomes. This results in an overlap of marks, sometimes decreasing user's visibility.
  • the present invention provides a navigation system, a navigation method, and a computer-readable storage medium for displaying the evaluation result of the driver's driving operation on a map in an easy to view manner.
  • a navigation system according to claim 1.
  • a computer-readable storage medium that stores computer-executable instructions for performing the navigation method in the second aspect of the present invention.
  • the first distance of an evaluation interval, used for evaluating the driver's driving operation is determined based on the first scale of the map displayed on the display unit.
  • the driver's driving operation in the evaluation interval having the first distance is evaluated based on the evaluation information for each unit interval included in the evaluation interval.
  • the control is performed so that the evaluation result in the evaluation interval is displayed at the position corresponding to the evaluation interval on the map displayed on the display unit.
  • FIG. 1 is a block diagram showing an example of the navigation system in this embodiment.
  • a navigation system 1 is installed, for example, on a vehicle. As shown in FIG. 1 , the navigation system 1 is connected to an Electronic Control Unit (ECU) 2, a current position detection processing unit 3, an operation unit 4, a display 5, and a speaker 6.
  • ECU Electronic Control Unit
  • the ECU 2 monitors the status of the units of the vehicle via various types of sensors to control the units of the vehicle including the power system, such as the engine and motor generator, the transmission, the drive system, and the control system (all not shown) of the vehicle.
  • the ECU 2 controls the transmission by acquiring the vehicle-speed pulse signal, which is proportional to the number of rotations of the axle, from the vehicle speed sensor and controls the fuel injection system (not shown) based on the oxygen concentration in exhaust gas acquired from the 02 sensor.
  • Various types of information such as the vehicle-speed pulse signal and the fuel injection amount, are input from the ECU 2 to the navigation system 1.
  • the current position detection processing unit 3 detects the current vehicle position. More specifically, the current position detection processing unit 3 includes at least one of the GPS, geomagnetic sensor, distance sensor, and gyro sensor (all not shown) to detect the current vehicle position (coordinates) and direction using a known method.
  • the operation unit 4 accepts user's operation input. Any arbitrary configuration may be used as the actual configuration of the operation unit 4.
  • the operation unit 4 may be configured using a touch panel provided in front of the display 5, pushbuttons, a remote operation unit such as a remote control, or a voice recognition unit such as a microphone that accepts voice input.
  • the display 5 displays various types of information under control of the navigation system 1. Any arbitrary configuration may be used as the actual configuration of the display 5. For example, a flat panel display, such as a known liquid crystal display or organic electro-luminescence display, may be used.
  • the speaker 6 outputs various types of voice under control of the navigation system 1. Any arbitrary mode of voice may be used as the actual voice output from the speaker 6. Synthetic voice or pre-recorded voice may be the output as necessary.
  • the navigation system 1 includes a control unit 10 and a data recording unit 20.
  • the control unit 10 controls the navigation system 1. More specifically, the control unit 10 is a computer configured by a CPU, various programs interpreted by and executed on the CPU, and an internal memory such as a RAM for storing programs and various data.
  • the navigation program in this embodiment is installed into the navigation system 1 via a recording medium or a network to substantially configure the units of the control unit 10.
  • the programs mentioned above include the basic control programs such as the OS and the application programs that are started by the OS for implementing specific functions.
  • the control unit 10 includes the following three conceptually functional units: evaluation information acquisition unit 11, evaluation unit 12, and display control unit 13.
  • the evaluation information acquisition unit 11 acquires evaluation information, which is an index for evaluating the vehicle driver's driving operation, for each predetermined-distance unit interval.
  • the evaluation unit 12 evaluates the driver's driving operation in each evaluation interval.
  • the display control unit 13 performs control so that the evaluation result by the evaluation unit 12 is displayed at a position corresponding to each evaluation interval on the map displayed on the display 5. The processing performed by the units of the control unit 10 will be described later more in detail.
  • the data recording unit 20 records therein the programs and various data required for the operation of the navigation system 1.
  • the data recording unit 20 is configured by a magnetic recording medium such as a hard disk (not shown) that is one of external storage devices.
  • Other recording media including a semiconductor storage medium, such as a flash memory, or an optical recording medium, such as a DVD or a blue-ray disc, may also be used as the data recording unit 20 in place of, or in conjunction with, a hard disk.
  • the data recording unit 20 includes a map information database 21 (hereinafter a database is abbreviated DB) and an evaluation information DB 22.
  • DB map information database 21
  • DB 22 evaluation information database 22.
  • the map information DB 21 stores map information.
  • the map information includes the following: link data (link number, connection node number, road coordinates, road type, number of lanes, driving regulation, etc.), node data (node number, coordinates), object data (traffic signal, road sign, guard rail, building, etc.), facility data (facility location, facility type, etc.), geographical feature data, and map display data for displaying a map on the display 5.
  • the evaluation information DB 22 stores evaluation information that is used as an index for evaluating the vehicle driver's driving operation. The specific contents of the evaluation information and the time at which the evaluation information is stored in the evaluation information DB 22 will be described later.
  • the processing executed by the navigation system 1 is divided roughly into two: evaluation information acquisition processing and display control processing.
  • FIG. 2 is a flowchart showing the evaluation information acquisition processing (in the description of the processing below, "step” is abbreviated S).
  • the evaluation information acquisition processing is started, for example, when the navigation system 1 is turned on and the user performs the operation via the operation unit 4 to set the vehicle's travel destination.
  • the user sets the destination, for example, by performing one of the following operations: the user performs the operation via operation unit 4 to set the final destination, the user re-arranges two or more already-set destinations via the operation unit 4 to set a destination different from the already-set final destination as the new final destination, and the user erases the already-set final destination and sets another destination as the new final destination (the same applies to the display control processing that will be described later).
  • the evaluation information acquisition unit 11 waits until route guidance from the starting point (for example, the current position detected by the current position detection processing unit 3) to the destination is started (No in SA1).
  • route guidance from the starting point for example, the current position detected by the current position detection processing unit 3
  • route guidance based on the search result may be used for an actual route search from the starting point to the destination and for the route guidance based on the search result. The detailed description is omitted here (the same applies to the display control processing that will be described later).
  • the evaluation information acquisition unit 11 serially determines whether the driver's driving operation is fuel-efficient (for example, for each predetermined unit time or for each predetermined unit distance) and records the determination result in the RAM (not shown) (SA2). More specifically, when the eco lamp, which indicates whether or not the driver's driving operation is fuel-efficient, is configured to be displayed on the vehicle's meter panel (not shown), the evaluation information acquisition unit 11 acquires the eco lamp information, which identifies the eco lamp on/off status, from the ECU 2 and, based on the eco lamp information, determines the eco lamp on/off status for each predetermined time or for each predetermined distance. The evaluation information acquisition unit 11 records the determination result in the RAM.
  • the eco lamp includes the eco lamp exemplified in FIG. 3A and the eco drive indicator lamp and the indicator exemplified in FIG. 3B .
  • FIGS. 3A and 3B are diagrams showing an example of the meter panel on which the eco lamp and so on is displayed.
  • FIG. 3A is a diagram showing an example of the meter panel of a gasoline-powered vehicle
  • FIG. 3B is a diagram showing an example of the meter panel of a hybrid vehicle.
  • the eco lamp is turned on as shown in FIG. 3A .
  • the eco lamp is turned off.
  • the evaluation information acquisition unit 11 acquires the eco lamp information from the ECU 2 for use in identifying the on/off status of the eco lamp. Then, based on the acquired eco lamp information, the evaluation information acquisition unit 11 determines whether or not the eco lamp is turned on for each predetermined unit time or for each unit distance and records the determination result in the RAM.
  • the eco drive indicator lamp is turned on as shown in FIG. 3B .
  • the regenerative brake is in operation or only the motor is used as the driving force (when the indicator is in "the HV eco zone” in FIG. 3B ) or if the engine is also used as the driving force but the number of revolutions of the engine is equal to or lower than the threshold (when the indicator is in "the eco zone” in FIG. 3B )
  • the eco drive indicator lamp is turned on.
  • the evaluation information acquisition unit 11 acquires the eco lamp information from the ECU 2 for use in identifying the on/off status of the eco drive indicator lamp or the indicator.
  • the evaluation information acquisition unit 11 determines whether or not the eco drive indicator lamp is turned on and, if the eco drive indicator lamp is turned on, whether the indicator is in "the HV eco zone" or in "the eco zone", for each predetermined unit time or for each predetermined unit distance and records the determination result in the RAM.
  • the evaluation information acquisition unit 11 determines, after the processing in SA2, whether the vehicle has traveled a unit interval (SA3).
  • the unit interval means an interval having a predetermined distance.
  • the predetermined distance may be a fixed value (for example, 100m).
  • the predetermined distance may be the distance of the vehicle's travel route divided into equal intervals, that is, the distance of the interval of a unit configuring the vehicle's travel route.
  • the evaluation information acquisition unit 11 determines that the vehicle has traveled the unit interval when the vehicle has traveled 100m after the processing of the immediately-preceding SA3 (or after route guidance is started in SA1 if the processing of SA3 is performed for the first time).
  • the evaluation information acquisition unit 11 If it is found as a result of the determination that the vehicle has not yet traveled the unit interval (No in SA3), the evaluation information acquisition unit 11 returns control to SA2. Thereafter, the processing of SA2 and SA3 is repeated until it is determined that the vehicle has traveled the unit interval (Yes in SA3).
  • the evaluation information acquisition unit 11 acquires the determination result for the unit interval, which the vehicle has traveled, as the evaluation information (SA4).
  • the evaluation information acquisition unit 11 references the RAM and acquires the determination result, which indicates whether or not the eco lamp was turned on while the vehicle was traveling the unit interval, as the evaluation information. More specifically, the evaluation information acquisition unit 11 acquires, for example, two types of information as the evaluation information. One is the unit interval information identifying the distance of the unit interval that the vehicle traveled, and the other is the eco lamp turn-on information identifying the distance that the vehicle traveled in the unit interval with the eco lamp on.
  • the evaluation information acquisition unit 11 references the RAM and acquires the determination result, which indicates whether or not the eco drive indicator lamp was turned on while the vehicle was traveling the unit interval and, if the eco drive indicator lamp was turned on, whether the indicator was in "the HV eco zone" or in "the eco zone", as the evaluation information. More specifically, the evaluation information acquisition unit 11 acquires, for example, three types of information as the evaluation information. One is the unit interval information identifying the distance of the unit interval that the vehicle traveled, the second is the eco drive indicator lamp turn-on information identifying the distance that the vehicle traveled in the unit interval with the eco drive indicator lamp on, and the third is the HV eco zone information identifying the distance that the vehicle traveled in the unit interval with the indicator in "the HV eco zone".
  • the evaluation information acquisition unit 11 associates the evaluation information, acquired in SA4, with the unit interval information and stores the associated evaluation information in the evaluation information DB 22 (SA5).
  • the unit interval information may be the coordinate information on the starting point and the end point of the unit interval that the vehicle traveled or the link number at which the unit interval is located.
  • the evaluation information acquisition unit 11 determines whether or not the vehicle has arrived at the destination (SA6) and, if the vehicle has not yet arrived at the destination (No in SA6), control is passed back to SA2. Thereafter, the processing of SA2 to SA6 is repeated until the vehicle arrives at the destination. This repeated processing allows the evaluation information, which is an index for evaluating the vehicle driver's driving operation, to be acquired for each unit interval having the predetermined distance.
  • the evaluation information acquisition unit 11 terminates the evaluation information acquisition processing. At this time, the evaluation information acquisition unit 11 stores the travel route information identifying the travel route along which the vehicle traveled, the date/time information identifying the date and time at which the evaluation information was acquired, and the final evaluation information identifying the final evaluation result for the travel from the starting point to the destination in the evaluation information DB 22 in association with the evaluation information, which was stored in the evaluation information DB 22 in SA5 before the vehicle arrived at the destination.
  • the travel route information may be the coordinate information on the starting point and the destination.
  • FIG. 4 is a flowchart showing the display control processing.
  • the display control processing is started, for example, when the navigation system 1 is turned on and the user performs the operation via the operation unit 4 to set the vehicle's travel destination.
  • the display control processing is executed concurrently with the evaluation information acquisition processing described above.
  • the evaluation unit 12 waits until the route guidance from the starting point (for example, the current position detected by the current position detection processing unit 3) to the destination is started (No in SB1).
  • the evaluation unit 12 identifies the scale of the map displayed on the display 5 (SB2). That is, the evaluation unit 12 identifies the scale of the map displayed on the display 5 for showing the route from the starting point to the destination.
  • the evaluation unit 12 determines the first distance of an evaluation interval for evaluating the driver's driving operation (SB3). For example, with the table indicating the correspondence between the scale of the map and the distance of the evaluation interval stored in the data recording unit 20 in advance, the evaluation unit 12 references the table to determine the first distance. More specifically, the first distance may be determined as 100m when the scale of the map is 1/10000, and 200m when the scale of the map is 1/20000. The first distance is determined in such a way that the smaller the scale of the map is, that is, the wider the display range of the map displayed on the display 5 is, the longer the first distance is.
  • the evaluation unit 12 determines if there is the past evaluation information that was stored in the evaluation information DB 22 during the evaluation information acquisition processing at a past travel time (SB4). For example, if the evaluation information, associated with the coordinate information on the starting point and the destination of the route for which the guidance is started in SB1 and a date/time earlier than the date/time of the route guidance started in SB1, is stored in the evaluation information DB 22, the evaluation unit 12 determines that there is the past evaluation information stored in the evaluation information DB 22.
  • the evaluation unit 12 acquires the past evaluation information for each unit interval, included in each evaluation interval having the first distance, from the evaluation information DB 22. Then, based on the acquired past evaluation information, the evaluation unit 12 evaluates the driver's driving operation in the evaluation interval (SB5). If the vehicle traveled from the starting point to the destination two or more times in the past and the past evaluation information corresponding to each travel is stored in the evaluation information DB 22, the evaluation unit 12 acquires the evaluation information, acquired during the last travel from the starting point to the destination, from the evaluation information DB 22.
  • the evaluation unit 12 may acquire the past evaluation information, acquired when the final evaluation result for the travel from the starting point to the destination is best, from the evaluation information DB 22. Alternatively, the evaluation unit 12 may also determine which past evaluation information is to be acquired from the evaluation information DB 22 based on an instruction received via the operation unit 4.
  • the evaluation unit 12 divides the travel route from the starting point to the destination into evaluation intervals each having the first distance. And, based on the coordinate information on the starting point and the end point of each evaluation interval or based on the link number of a link positioned in the evaluation interval, the evaluation unit 12 identifies the unit intervals included in the evaluation interval and acquires the past evaluation information for each identified unit interval from the evaluation information DB 22. Based on the past evaluation information acquired in this way, the evaluation unit 12 finds an eco-travel ratio and, based on this eco-travel ratio, evaluates the driver's driving operation in each evaluation interval.
  • the eco-travel ratio is a ratio of the vehicle travel distance, in which driver's driving operation was fuel efficient, in each evaluation interval.
  • the evaluation unit 12 finds an eco-travel ratio of the distance for which the vehicle traveled with the eco lamp turned on in each evaluation interval and, based on the eco-travel ratio, evaluates the driver's driving operation in each evaluation interval. More specifically, based on the evaluation information for each unit interval included in the evaluation interval, the evaluation unit 12 calculates the total distance for which the vehicle traveled in the evaluation interval with the eco lamp turned on. If the value calculated by dividing the total distance by the distance of the evaluation interval (that is, eco-travel ratio) is equal to or larger than the predetermined threshold (for example, 0.9), the evaluation unit 12 evaluates that the driver's driving operation in the evaluation interval is "good". Conversely, if the value is smaller than the predetermined threshold, the evaluation unit 12 evaluates that the driver's driving operation in the evaluation interval is "not good".
  • the predetermined threshold for example, 0.9
  • the evaluation unit 12 finds two types of eco-travel ratio. One is a first eco-travel ratio of the distance for which the vehicle traveled with the eco drive indicator lamp turned on in the evaluation interval and the other is a second eco-travel ratio of the distance for which the vehicle traveled with the indicator in "the HV eco zone" in the evaluation interval. Based on the first and second eco ratios, the evaluation unit 12 evaluates the driver's driving operation in each evaluation interval.
  • FIG. 5 is a flowchart showing the evaluation processing for a hybrid vehicle when the evaluation unit 12 evaluates the driver's driving operation in each evaluation interval.
  • the evaluation unit 12 performs the processing as shown in FIG. 5 . That is, based on the evaluation information for each unit interval included in an evaluation interval, the evaluation unit 12 calculates the total distance (eco-lamp-on travel distance) for which the vehicle traveled with the eco drive indicator lamp tuned on in the evaluation interval. After that, the evaluation unit 12 determines if the value, generated by dividing the eco-lamp-on travel distance by the distance of the evaluation interval (that is, first eco-travel ratio), is equal to or larger than the predetermined threshold T A (for example, 0.9) (SC1).
  • T A for example, 0.9
  • the evaluation unit 12 evaluates that the driver's driving operation in the evaluation interval is "not good" (SC2).
  • the evaluation unit 12 calculates the total distance (eco-zone travel distance), for which the vehicle traveled with the indicator in "the HV eco zone" in this evaluation interval, based on the evaluation information for each unit interval included in the evaluation interval. After that, the evaluation unit 12 determines if the value, generated by dividing the eco-zone travel distance by the distance of the evaluation interval (that is, second eco-travel ratio), is equal to or larger than the predetermined threshold T B (for example, 0.7) (SC3).
  • the predetermined threshold T B for example, 0.7
  • the evaluation unit 12 evaluates that the driver's driving operation in the evaluation interval is "good” (SC4).
  • the evaluation unit 12 evaluates that the driver's driving operation in the evaluation interval is "very good” (SC5).
  • the evaluation unit 12 terminates the evaluation processing.
  • the display control unit 13 performs the following processing after the processing in SB5. That is, the display control unit 13 controls the display of the past evaluation result so that the past evaluation result is displayed at the position corresponding to the evaluation interval on the map displayed on the display 5 (SB6).
  • the past evaluation result is a evaluation result of the driver's driving operation in each evaluation interval, for the past travel from the starting point to the destination.
  • FIG. 6 is a diagram showing an example of the display 5 on which the past evaluation result is displayed. As shown in FIG. 6 , the display control unit 13 causes the display 5 to display a leaf-shaped mark, which indicates the past evaluation result, at the position corresponding to each evaluation interval. That is, leaf-shaped marks are displayed, one for each evaluation interval.
  • a leaf-shaped mark has a color that varies according to the evaluation result in each evaluation interval (hatching shading in FIG. 6 ).
  • the display control unit 13 causes the display 5 to display the leaf-shaped mark semi-transparently (represented by dotted line in FIG. 6 ). In this way, because the distance of the evaluation interval is determined properly in SB3 based on the scale of the map, the leaf-shaped marks are displayed in an easy to view way with no overlapping between the neighboring leaf-shaped marks.
  • the evaluation unit 12 acquires the current evaluation information for the current travel, from the evaluation information DB 22. At this time, the evaluation unit 12 acquires the current evaluation information for each unit interval included in the latest evaluation interval having the first distance. Based on the acquired current evaluation information, the evaluation unit 12 evaluates the driver's driving operation in the latest evaluation interval (SB7).
  • the evaluation unit 12 acquires the current evaluation information, which has been stored in the evaluation information DB 22 during the evaluation information acquisition processing performed while the vehicle travels the distance of the evaluation interval after the previous processing in SB7 (or after the start of route guidance in SB1 when the processing in SB7 is performed for the first time), from the evaluation information DB 22.
  • the evaluation unit 12 evaluates the driver's driving operation in the latest evaluation interval based on the acquired current evaluation information.
  • the actual method for evaluating the driver's driving operation in the latest evaluation interval is the same as the method for evaluating the past travel described in SB5 in FIG. 4 and, therefore, the description is omitted here.
  • the display control unit 13 performs control processing so that the current evaluation result is displayed at the position corresponding to the evaluation interval on the map displayed on the display 5 (SB8).
  • the current evaluation result is a evaluation result of the driver's driving operation in the latest evaluation interval, for the current travel.
  • the example in FIG. 6 shows that the display control unit 13 causes the display 5 to display a leaf-shaped mark, which indicates the current evaluation result, at the position corresponding to the evaluation interval.
  • the display control unit 13 causes the display 5 to display the leaf-shaped mark non-transparently (represented by solid line in FIG. 6 ).
  • the evaluation unit 12 checks whether the scale of the map, displayed on the display 5, is changed (SB9). If it is determined as the result of the checking that the scale of the map is changed (Yes in SB9), control is passed back to SB2 to identify the scale of the map displayed on the display 5 (SB2).
  • the evaluation unit 12 checks whether the vehicle has arrived at the destination (SB 10). If it is determined as the result of the checking that the vehicle has not yet arrived at the destination (No in SB10), control is passed back to SB7. That is, the evaluation unit 12 acquires the current evaluation information from the evaluation information DB 22 and, based on the acquired current evaluation information, evaluates the driver's driving operation in the latest evaluation interval (SB7). Thereafter, the evaluation unit 12 repeats the processing from SB7 to SB10 until the vehicle arrives at the destination. This repeated processing sequentially superimposes the current evaluation result of the driver's driving operation in each evaluation interval of the current travel on the leaf-shaped marks each indicating a past evaluation result.
  • the evaluation unit 12 performs the final evaluation of the driver's driving operation in the current travel from the starting point to the destination.
  • the display control unit 13 causes the display 5 to display the final evaluation result (SB 11).
  • the evaluation unit 12 evaluates the driver's driving operation in all unit intervals of the vehicle's travel route in the current travel from the starting point to the destination based on the evaluation information on each of the unit intervals. Then, according to the best-evaluation ratio of the unit intervals, the evaluation unit 12 performs the final evaluation for the driver's driving operation in the current travel from the starting point to the destination.
  • the best-evaluation ratio is ratio of the unit intervals, whose evaluation result is a best evaluation result, to all unit intervals of the travel route.
  • the best evaluation result (for example, "good” for a gasoline-powered vehicle, and “very good” for a hybrid vehicle) corresponds to the best grade when the evaluation unit 12 evaluates the driver's driving operation with a plurality of grades. More specifically, the evaluation unit 12 may perform the final evaluation for the driver's driving operation in the current travel from the starting point to the destination as follows: "GOLD" when the evaluation results in all unit intervals, which constitute the travel route, are the best evaluation results, "SILVER” when the best-evaluation ratio is 70% or higher, and "BRONZE” when the best-evaluation ratio is lower than 70%.
  • the display control unit 13 causes the display 5 to display the final evaluation result ("GOLD" in FIG. 7 ) of the driver's driving operation in the current travel from the starting point to the destination based on the evaluation of the evaluation unit 12.
  • the final evaluation result displayed on the display 5 in the example in FIG. 7 : starting point ("home") and destination ("company") of the current travel, fuel consumption of the current travel from the starting point to the destination (24.5km/L), fuel consumption of the previous travel from the starting point to the destination (23.5km/L), and lowest fuel consumption in the past travels from the starting point to the destination (23.9km/L).
  • the display control unit 13 checks whether or not the unit intervals, which constitute the vehicle's travel route, include at least one of unit intervals whose evaluation result is not the best evaluation result (hereinafter called "non-best unit interval" as necessary) (SB 12). More specifically, the evaluation unit 12 evaluates the driver's driving operation in all unit intervals, which constitute the vehicle's travel route of the current travel from the starting point to the destination, based on the evaluation information for each of the unit intervals.
  • the display control unit 13 determines that the vehicle's travel route includes the non-best unit interval.
  • control unit 10 terminates the display control processing.
  • the display control unit 13 executes the non-best unit interval guidance processing (SB13). After that, the control unit 10 terminates the display control processing.
  • FIG. 8 is a flowchart showing the non-best unit interval guidance processing.
  • the evaluation unit 12 determines whether or not the evaluation results in all evaluation intervals, which constitute the vehicle's travel route, are the best evaluation results (SD1). That is, the evaluation unit 12 checks whether or not the evaluation results in all evaluation intervals are the best evaluation results as the result of the evaluation of the driver's driving operation in the evaluation intervals of the current travel. This evaluation is performed in SB7 of the display control processing in FIG. 4 .
  • control unit 10 terminates the non-best unit interval guidance processing.
  • the display control unit 13 finds an evaluation interval which includes the non-best unit interval (hereinafter called "specific evaluation interval" as necessary) and finds a second distance of the specific evaluation interval, at which the evaluation result changes from the best evaluation result to a non-best evaluation result, by changing the distance of the specific evaluation interval from the first evaluation distance (SD2).
  • the non-best evaluation result corresponds to grades other than the best grade when the evaluation unit 12 evaluates the driver's driving operation with a plurality of grades. So, the evaluation result by the evaluation unit 12 is one of the best evaluation result and the non-best evaluation result.
  • the display control unit 13 sets a distance, shorter than the first distance determined in SB3 in FIG. 4 , as the distance of an evaluation interval and evaluates the driver's driving operation in the evaluation interval that has the set distance and that includes the non-best unit interval. In this way, the display control unit 13 evaluates the driver's driving operation in the specific evaluation intervals, which include the non-best unit interval, while making the distance of the evaluation interval shorter in stages (for example, the distance of an evaluation interval is shortened sequentially to 500m, to 200m, and then to 100m). The display control unit 13 finds the second distance of the specific evaluation interval, at which the evaluation result changes from the best evaluation result to the non-best evaluation result.
  • the display control unit 13 determines the scale of the map based on the second distance (SD3).
  • the display control unit 13 references the table, which indicates the correspondence between the scale of the map and the distance of the evaluation interval, to determine the scale of the map corresponding to the second distance. More specifically, the display control unit 13 may determine the scale as 1/10000 when the second distance is 100m, and as 1/20000 when the second distance is 200m.
  • the display control unit 13 changes the scale of the map, displayed on the display 5, to the scale determined by the display control unit 13 in SD3 (SD4).
  • the display control unit 13 acquires the current evaluation information for each unit interval, included in each evaluation interval having the second distance, from the evaluation information DB 22 for the current travel and, based on the acquired current evaluation information, evaluates the driver's driving operation in each evaluation interval (SD5). More specifically, the display control unit 13 acquires the current evaluation information stored in the evaluation information DB 22 during the evaluation information acquisition processing that was performed while the vehicle traveled to the destination in the current travel. And, based on the acquired current evaluation information, the display control unit 13 evaluates the driver's driving operation in each evaluation interval.
  • the actual method for evaluating the driver's driving operation in each evaluation interval is the same as the method for evaluating the past travel described in SB5 in FIG. 4 and, therefore, the description is omitted here.
  • the display control unit 13 performs control so that the current evaluation result in each evaluation interval, which has the second distance, is displayed at the position corresponding to the evaluation interval on the map displayed on the display 5 (SD6). Because the evaluation result in the evaluation interval which includes a non-best unit interval is not best evaluation result, the leaf-shaped mark corresponding to a non-best evaluation result is displayed on the display 5. This leaf-shaped mark, when displayed, gives guidance to the user that the evaluation interval includes a non-best unit interval.
  • control unit 10 terminates the non-best unit interval guidance processing and returns control to the main routine.
  • the evaluation unit 12 determines the first distance of the evaluation interval, which is an interval for evaluating the driver's driving operation, based on the first scale of the map displayed on the display 5 as described above. In addition, the evaluation unit 12 evaluates the driver's driving operation in each evaluation interval having the first distance, based on the evaluation information for each unit interval included in the evaluation interval.
  • the display control unit 13 performs control so that the evaluation result by the evaluation unit 12 is displayed at the position corresponding to the evaluation interval, on the map displayed on the display 5. This control therefore allows the evaluation results, which are displayed on the display 5, to be properly spaced to each other according to the scale of the map, thus allowing the evaluation result of the driver's driving operation to be displayed on the map in an easy to view format.
  • the display control unit 13 performs control to provide the guidance on the non-best unit interval. This means that, even if the evaluation results in all evaluation intervals are best evaluation results depending upon the distance of the evaluation interval, the display control unit 13 allows the user to identify a unit interval whose evaluation result is not the best evaluation result, thus notifying the user of an interval in which the user can improve the driving operation.
  • the display control unit 13 finds the second distance of the specific evaluation interval that includes the non-best unit interval, at which the evaluation result in the specific evaluation interval changes from the best evaluation result to the no-best evaluation result. In addition, the display control unit 13 determines the second scale of the map based on the second distance and changes the scale of the map, displayed on the display 5, from the first scale to the second scale. After that, the display control unit 13 performs the control to provide the guidance on the non-best unit interval, on the map of the second scale. The display control unit 13 therefore allows the user to identify an evaluation interval that includes a unit interval whose evaluation result is not best evaluation result, enabling the user to easily identify an interval in which the driving operation can be improved.
  • the evaluation information acquisition unit 11 serially determines whether or not the driver's driving operation is fuel efficient and, for each unit interval, acquires the determination result of the unit interval as the evaluation information. Based on the evaluation information on the unit intervals included in the evaluation interval, the evaluation unit 12 identifies a ratio of the vehicle's travel distance, for which the driver's driving operation in each of the evaluation intervals is fuel efficient, and evaluates the driver's driving operation in each evaluation interval based on the ratio. Therefore, it is possible to properly determine whether or not the driver's driving operation is fuel efficient in each evaluation interval according to the ratio at which the driver performs fuel-efficient driving operation in the evaluation interval.
  • the problems to be solved by the present invention and the effect of the present invention are not limited by the contents described above but may be varied according to the implementation environment of the present invention or the details of the configuration. Therefore, the present invention may solve only a part of the problems described above or archive only a part of the effects described above.
  • the navigation system 1 may be mounted on a vehicle as one integrated device.
  • the navigation system 1 may also be provided, in part or in whole (for example, the evaluation unit 12 of the control unit 10, or evaluation information DB 22 of the data recording unit 20), in a center device connected to a vehicle over a network in such a way that they can communicate with each other.
  • the evaluation information acquisition unit 11 performs the following in SA2 in the evaluation information acquisition processing shown in FIG. 2 . That is, the evaluation information acquisition unit 11 acquires eco-lamp information, which identifies the eco-lamp on/off status, from the ECU 2 and, based on the eco-lamp information, serially determines the eco-lamp on/off status. Instead of this method, the evaluation information acquisition unit 11 may also acquire the information, which identifies the accelerator opening degree, brake pedal force, power source usage status, etc., directly from the ECU 2 and, based on the acquired information, serially determines whether or not the driver's driving operation is fuel efficient.
  • the evaluation unit 12 calculates the total distance, for which the vehicle traveled in the evaluation interval with the eco-lamp turned on or with the indicator in "the HV eco-zone", in SB5 of the display control processing shown in FIG. 4 . After that, based on whether the value, generated by dividing the total distance by the distance of the evaluation interval, is equal to or larger than the predetermined threshold, the evaluation unit 12 evaluates the driver's driving operation in the evaluation interval.
  • the predetermined threshold may be changed according to the driver's level. For example, the predetermined threshold may be set to 0.7 for a driver at the beginner's level, 0.8 for a driver at the intermediate level, and 0.9 for a driver at the advanced level.
  • the driver's level may be determined according to the final evaluation of the driver's driving operation in SB11 of the display control processing. For example, when the final evaluation of the driver's driving operation is "GOLD" in two consecutive travels, the driver's level may be increased to the next higher level.

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  • Engineering & Computer Science (AREA)
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  • Remote Sensing (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Social Psychology (AREA)
  • Navigation (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
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  • Instrument Panels (AREA)

Claims (3)

  1. Système de navigation comprenant :
    une unité d'acquisition d'information d'évaluation (11) qui est adaptée pour acquérir des informations d'évaluation pour chaque intervalle d'unité sur un itinéraire de déplacement d'un véhicule, les intervalles d'unité présentant une distance prédéterminée, les informations d'évaluation étant un indice pour évaluer une opération de conduite du conducteur du véhicule ;
    dans lequel l'unité d'acquisition d'information d'évaluation (11) est adaptée pour déterminer par répétition si l'opération de conduite du conducteur est économique en carburant ou pas et pour chaque intervalle d'unité pour acquérir un résultat de détermination dans l'intervalle d'unité comme informations d'évaluation ;
    une unité d'évaluation (12) qui est adaptée pour évaluer l'opération de conduite du conducteur dans chaque intervalle d'unité sur la base des informations d'évaluation pour chaque intervalle d'unité ; dans lequel l'unité d'évaluation (12) est adaptée pour déterminer une première distance d'un intervalle d'évaluation pour évaluer l'opération de conduite du conducteur et pour évaluer l'opération de conduite du conducteur dans l'intervalle d'évaluation présentant la première distance sur la base des informations d'évaluation pour chaque intervalle d'unité inclus dans l'intervalle d'évaluation ; et
    une unité de commande d'affichage (13) qui est adaptée pour réaliser la commande de sorte qu'un résultat d'évaluation par l'unité d'évaluation soit affiché sur
    une position correspondant à l'intervalle d'évaluation sur la carte affichée sur une unité d'affichage,
    caractérisé en ce que :
    l'unité d'évaluation est adaptée pour déterminer la première distance sur la base d'une première échelle d'une carte affichée sur l'unité d'affichage ; dans lequel
    sur la base des informations d'évaluation sur les intervalles d'unité inclus dans l'intervalle d'évaluation, l'unité d'évaluation (12) est adaptée pour identifier un rapport de la distance de déplacement de véhicule, pour lequel l'opération de conduite du conducteur dans chacun des intervalles d'évaluation est économique en carburant, et pour évaluer l'opération de conduite du conducteur dans chaque intervalle d'évaluation sur la base du rapport ; et
    si l'évaluation résulte en tous les intervalles d'évaluation qui constituent l'itinéraire de déplacement du véhicule sont des meilleurs résultats d'évaluation, pour lesquels le rapport est égal ou supérieur à un seuil prédéterminé mais si l'itinéraire de déplacement inclut un intervalle d'unité non optimal, dont le résultat d'évaluation est un résultat d'évaluation non optimal, l'unité de commande d'affichage (13) est adaptée pour trouver une seconde distance d'un intervalle d'évaluation spécifique qui inclut l'intervalle d'unité non optimal, auquel le résultat d'évaluation dans l'intervalle d'évaluation spécifique change du meilleur résultat d'évaluation au résultat d'examen non optimal,
    déterminer une seconde échelle de la carte sur la base de la seconde distance,
    changer l'échelle de la carte affichée sur l'unité d'affichage de la première échelle à la seconde échelle, et
    réaliser la commande pour fournir une identification de l'intervalle d'unité non optimal sur la carte de la seconde échelle.
  2. Procédé de navigation comprenant :
    l'acquisition d'informations d'évaluation pour chaque intervalle d'unité sur un itinéraire de déplacement d'un véhicule, les intervalles d'unité présentant une distance prédéterminée, les informations d'évaluation étant un indice pour évaluer une opération de conduite du conducteur du véhicule,
    la détermination répétée si l'opération de conduite du conducteur est économique en carburant ou pas ;
    l'acquisition pour chaque intervalle d'unité d'un résultat de détermination dans l'intervalle d'unité comme informations d'évaluation ;
    l'évaluation de l'opération de conduite du conducteur dans chaque intervalle d'unité sur la base des informations d'évaluation pour chaque intervalle d'unité ;
    la détermination d'une première distance d'un intervalle d'évaluation pour évaluer l'opération de conduite du conducteur ;
    l'évaluation de l'opération de conduite du conducteur dans l'intervalle d'évaluation présentant la première distance sur la base des informations d'évaluation pour chaque intervalle d'unité inclus dans l'intervalle d'évaluation ;
    la réalisation de la commande de sorte qu'un résultat d'évaluation de l'opération de conduite du conducteur soit affiché sur une position correspondant à l'intervalle d'évaluation sur la carte affichée sur une unité d'affichage ;
    caractérisé en ce que
    la première distance est déterminée sur la base d'une première échelle d'une carte affichée sur l'unité d'affichage ;
    dans lequel le procédé de navigation comprend en outre :
    l'identification sur la base des informations d'évaluation sur les intervalles d'unité inclus dans l'intervalle d'évaluation, d'un rapport de la distance de déplacement de véhicule, pour lequel l'opération de conduite du conducteur dans chacun des intervalles d'évaluation est économique en carburant ;
    l'évaluation de l'opération de conduite du conducteur dans chaque intervalle d'évaluation sur la base du rapport ; et
    si l'évaluation résulte en tous les intervalles d'évaluation qui constituent l'itinéraire de déplacement du véhicule sont des meilleurs résultats d'évaluation pour lesquels le rapport est égal ou supérieur à un seuil prédéterminé mais si l'itinéraire de déplacement inclut un intervalle d'unité non optimal, dont le résultat d'évaluation est un résultat d'évaluation non optimal,
    la découverte d'une seconde distance d'un intervalle d'évaluation spécifique qui inclut l'intervalle d'unité non optimal, auquel le résultat d'évaluation dans l'intervalle d'évaluation spécifique change du meilleur résultat d'évaluation au résultat d'examen non optimal, la détermination d'une seconde échelle de la carte sur la base de la seconde distance,
    le changement de l'échelle de la carte affichée sur l'unité d'affichage de la première échelle à la seconde échelle et
    la réalisation de la commande pour fournir une identification de l'intervalle d'unité non optimal sur la carte de la seconde échelle.
  3. Support de stockage lisible sur ordinateur qui stocke des instructions exécutables par ordinateur pour réaliser le procédé de navigation selon la revendication 2.
EP12173213.5A 2011-07-05 2012-06-21 Système de navigation, procédé de navigation et support de données lisible par ordinateur. Active EP2543966B1 (fr)

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JP2011148878A JP5724689B2 (ja) 2011-07-05 2011-07-05 ナビゲーションシステム、ナビゲーション方法、及びナビゲーションプログラム
JP2011171682A JP5803400B2 (ja) 2011-08-05 2011-08-05 ナビゲーションシステム、ナビゲーション方法、及びナビゲーションプログラム
JP2011171681A JP5782907B2 (ja) 2011-08-05 2011-08-05 ナビゲーションシステム、ナビゲーション方法、及びナビゲーションプログラム
JP2011213307A JP5810801B2 (ja) 2011-09-28 2011-09-28 評価表示システム、方法およびプログラム
JP2011241506A JP5760959B2 (ja) 2011-11-02 2011-11-02 評価表示システム、方法およびプログラム
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EP2543966A3 (fr) 2014-07-23
EP2543967A2 (fr) 2013-01-09
EP2543968A2 (fr) 2013-01-09
EP2543965B1 (fr) 2017-11-22
EP2543965A2 (fr) 2013-01-09
EP2543966A2 (fr) 2013-01-09
EP2543965A3 (fr) 2014-07-23
CN102865867A (zh) 2013-01-09
CN102865867B (zh) 2016-12-21
EP2543967B1 (fr) 2019-02-20
EP2543967A3 (fr) 2014-07-16
US20130018538A1 (en) 2013-01-17
US9146131B2 (en) 2015-09-29

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